A disaster for J Street?

(JNS) — Everything about the murder of Israeli teenager Yehuda Guetta shatters the myths and lies that are used by groups like J Street to promote the Palestinian cause. In a fair world, the killing and its aftermath would be an utter public-relations disaster for the Jewish left. But in the real world, things likely will turn out rather differently.

Let’s start with the ironic timing. Last week, J Street announced its support for legislation by Rep. Betty McCollum (D-Minn.) to penalize Israel for arresting teenage Palestinian terrorists. But just a few days later, it’s three Israeli — not Pal...